ELL Scaffolds for Middle School Science: Supporting English Learners in Grades 6–8
Middle school science spans three disciplinary core areas — life science, earth and space science, physical science — each with its own technical vocabulary, text types, and discourse norms. For ELL students, each unit represents a new language environment. The NGSS practices of scientific argumentation, constructing explanations, and obtaining and evaluating information all require academic language proficiency alongside scientific thinking. This page provides targeted scaffolds for each domain.
The Language Demands of Middle School Science
The NGSS science and engineering practices place high language demands on all students. For ELL students, these demands are compounded by simultaneous language acquisition.
NGSS practices and their language demands:
- Asking questions and defining problems — requires precise formulation of researchable questions using conditional and causal language
- Constructing explanations — requires the claim-evidence-reasoning structure in formal academic prose
- Engaging in argument from evidence — requires academic discussion discourse including rebuttal and qualification
- Obtaining, evaluating, and communicating information — requires reading science texts and writing formal lab reports
The language of middle school science texts is also dense. Informational science passages regularly include passive constructions, embedded clauses, nominalizations, and technical vocabulary chains that challenge even proficient readers.
High-Priority Science Vocabulary for Middle School ELLs
Life Science
Earth and Space Science
Physical Science
Cross-Cutting Science Language
Sentence Frames for Middle School Science
- My claim is ___.
- The evidence that supports this claim is ___.
- This evidence supports my claim because ___.
- An alternative explanation is ___, but I think ___ is more accurate because ___.
- I agree with ___ because the evidence shows ___.
- I disagree with ___ because ___.
- The data does not support ___ because ___.
- A counterargument is ___, but this can be addressed by ___.
- The strongest evidence for ___ is ___.
- ___ affects ___ by ___.
- When ___ increases/decreases, ___ increases/decreases because ___.
- The function of ___ in this system is ___.
- Energy/matter is transferred from ___ to ___ through ___.
- The purpose of this investigation was to ___.
- The independent variable was ___ and the dependent variable was ___.
- The data shows that as ___ changed, ___ changed.
- My results support/do not support my hypothesis because ___.
- A possible source of error was ___.
Supporting ELLs in NGSS Science Practices
Model the claim-evidence-reasoning framework explicitly. Use annotated exemplars to show students what each component looks like. Many ELL students have the scientific understanding to write a strong CER but do not know the genre conventions.
Provide graphic organizers for investigation design. A structured template for hypothesis, variables, procedure, data, and conclusion reduces the language demand of lab write-ups while preserving the scientific thinking.
Use visual models alongside text. Diagrams, concept maps, and system models allow ELL students to demonstrate understanding visually before or alongside written explanation.
Pre-teach text structure for science reading. Middle school science texts use cause-effect, problem-solution, and sequence structures. Teaching students to recognize these structures improves comprehension independent of vocabulary.
How Assist ELD helps
Paste your middle school science lesson, NGSS task, or lab procedure and Assist ELD generates disciplinary vocabulary, sentence frames for CER and argumentation, and investigation supports calibrated to ELP 1–2 and 3–4.